"Yes but people are starving in North Korea aren't they, they're not obese because they don't have any food," he argues.

At this point, Cracknell stumbles to explain himself. "Well... Exactly... But there are sanctions and everything else... But what the example is, is behavioural change," he says.

The Olympian later clarified his comments on Twitter, in response to a user who pointed out that the lack of obesity in North Korea is the "tragic by-product of a vicious, brutal regime where millions have died of starvation".